Filing tool



Aug, 1 11944,

0. W. THRAILKHLL FILING TOOL 5 Sheets-Sheet 1 Km mm "5 Filed May 26, 1942 FILING TOOL Sheets-Sheet Filed May 26, 19-42 Patented Aug. 1, 1944 FILING 'roo r.

Tor ville Thrailkill, wellingtomKans 'This invention relates-to a filing tool, and it is primarily an object of the invention'to provide a tool of'this kind wherein a file element is power drivenin a manner to'oscillate the same inclose simulation tdthembvemen'ts of a hand operated file, whereby effective action may be had on the work"withiwhich the. tool is used.

It is also an obje'ct'of the invention to provide-a filing tool whichis 'rea'dily" portable and which. comprises a holder for a filing element; said holder'being mounted for both endwise movement and' rocking movement, and wherein power driven means is" provided for reciprocating;

the holder and: for imposing-pressure thereon during the working stroke of the holder.

I Another object of theJinvention i to provide a filingitool comprising a portable unit includinga file holder mounted-" for'both endwise and swingingmovement, together with an operating means for said holder in'cluding'a motor.

struction and in thecombination and arrangement of the several parts of-my improved filing tool whereby certain important advantages are attained, as will be hereinafter more fully set forth.

Inorder that my invention maybe the better understood, I will now proceed to describe the same with reference to the accompanying drawings, in which Figure 1 is a view in top plan of a filing tool constructed in accordaice with an embodiment of my invention, a portion being broken away.

Figure 2 is a longitudinal vertical sectional view taken through- Figure 1 on substantially the line 2-2.

Figure 3 isia fragmentary longitudinal vertical sectional View at'the' forward end portion of the tool and showing certain of the parts in a second position, the line of section of Figure 3 being also substantially on the line 2-4 of Figure 1.

Figure 4 is a transverse sectional view takensubstantially on the line 4'-4 of Figure 2.

Figure 5 "is an enlarged fragmentary View,

partly in section and partly in elevation, illus-.

trating the means as herein comprised for regulating'the swinging movementof the'file holder.

Figure 6 is a fragmentary detail-ed sectional view taken substantially on the line 66 of Figure 5.

Figure '7 is a View in bottom plan of the file holder unapplied.

Figure 8 is a sectional view taken substantially on the line 8--8 of Figure 2.

Figure 9 is a view in top plan illustrating a 7 2o The invention consists of the details of confiling 1:001 constructed" in: accordance with' an other-embodimentzof,my'invention; 1

Figure 10 isza view in 'side elevation, with pe Y tions'in sectionjof the'too-l-as illustrated in Fig :ure-9. p

In "the" embodiment of 1 my" invention 7-- as illus trated'; in Figures- 1" to 8-fof the accompanying; drawings, A;- and 5 B denote suitably spaced side; plates 1 arranged; in parallelism= and substantially duplicate as to dimensions wand configuration:

These plates A and B-have theirrlower longitua dinal: edges (1." straight .from; end toend and co=- planar in a direction f-transversely of' the tool." The forward end portion I of each oi-the plates- 1 A; and His of a-width or height materiallyrin excess of thecorrespondin-g dimensions ofxthe rear portion 21 j 3 The outer extremityrofi themortions 2--oftheplates A and :B, adjacent-to the upper margins, thereof, are provided with the rectangular openings 3 in which are positioned the box n s .4 The openings 3 are of :such increasedsizewithzrespect to the boxings 4 to allow said boxings 4 tofhave; a limited up and down movement-Within theopenings 3. The boxing-s- 4r are constantlyurged to theirlower orinnermost positions by; thGi-GXDal'lSibl members 1 5 herein disclosed as: coil. springs interposed-between the boxings lland,- the upperor outerwallsof theopenings 3. Dis-. posed throughthe' boxings 41-ish-an elongated: headed bolt or -pivot member 6, the l-1ea;1,,'I--;0f

which: .contacting with the outer end of oneLof ing-nut 8 contacting with the outer end of the second boxing 4;- This bolt: 6- isfreely disposed v throughanupstandingflange 9 extending trans,- versely acrosst an end portion of,,an elongated,

plate 10; This plate lfl'is ofa length substan-f,

tially coeXtensiVeinJength with the side'plates A and -B and is of a width to substantially bridge the-space between said plates A and-B. 'Iheopposite orfree endportionof this plate, H1 is provided with an; upstanding,;lug I l @with whichis connected, :as. at I2, the lower orfinnerextremity,

of a retractile coilspring PM depending-from the;

central portionota bolt-l5 disposed transversely.

of the tool.- This bo,lt 15 is positioned at the.

upperouter corner of the portions [of theplate si A and Band has its head 16 contacting with the outer face of the side plate A and the holding),

nut-- l1 threading thereon in-contact with the outer face of the side plate B. The retractile member I4 is such as' to wardly theplate lik v 1 -.cons tantly urge. i up an outstanding cam arm The file holder H comprises an elongated plate 22 of a width substantially equal to the space between the side plates A and B, and which plate is of a length to extend along between the major length of said plates A and B. This plate 22, at;

its opposite end portions, is provided thereacross with the upstanding heavy flanges passing through bushings 24 snugly fitting within suitably positioned openings 25 extending throughsaid flanges 23. The oppositeend portions of this plate l0 areprovided in 'their'under or outer surfaces with the threaded'sockets 26 into which thread the screws 21 for holding in secure posi-' tion upon the under surface of the plate III the file or rasp F; This file or rasp F may be coarse or fine or of such gauge as requiredby the work! It is believed to be obviousthatthe holder-H, with, of course, the applied fileor rasp F,has'reciprocatory movement along the rods l9, and at" the same time swinging movement'in a direction substantially at right angles to the path ofre ciprocation.

The flange 23 at the forward end portion of the tool, or at that end portion adjacent to the provided with an up free end of the plate i0, is standing post 28 which passes up through an elongated slot 29 provided in the adjacent/portion of the plate 10. This slot 29 extends lengthwise of the plate Ill and is of a lengthsuflicient to allow for the desired reciprocation of the holder H. Pivotally connected, as at 30, with the portion of the post 28 above the plate 10, is an end por-- tion of a rigid link 3|, the opposite end portionof which being pivotally connected, as at 32, with the lower end portion of a vertically disposed rock arm 33-. The upper portion of'this rock arm 33 is pivotally connected, as at 34,' to th upper part' of the portion I of theplate B. The central"portion of this arm 33 is provided with a longitudi nally disposed slot 35 in which is slidably mounteda' block 36. This block 35 has pivotally connected thereto, as at 31. an end portion of' a lever 38. The opposite end portion of this lever 38 is provided with a rigid strap 39 which operativelysurrounds a disk! eccentrically mounted upon a shaft 4|; posed through and supported by the bushings 42 inserted through the side walls A and B, and

which shaftextends, in the present embodiment of my invention. a material distance outwardly" beyond the wall B. This extended portion of the" shaft 4| carries a spiral gear 43 meshing with a spiral pinion 44 carried by a transversely disposed driven shaft 45 comprised in the motor structure S. This shaft 45 is in conventional driven connection with the drive shaft of the motor E proper which, in the present instance, is of an electrical type.

Fixed to the shaft '41 for rotation therewith is 46 which, during the rotation of the shaft 4|, intermittently contacts from above with an upstanding bracket 41 car- This shaft 4] is rotatably dis- 2,354,716 v II ried by the plate l0. As is clearly illustrated in the accompanying drawings, the connection between the bracket 41 and the plate 10 is of a cushioned type, as indicated at 48, so that in the use of the tool compensation will be made for any inequalities in the surface of the work upon which th tool is operated. It is to be pointed out that as the cam arm 45 passes down and over the bracket 41 the holder H is being moved rearwardly or in the directiondesired to effect the cutting action of the file ,1 on the work. This contact of the cam arm 45 with the bracket 41 exerts the desired downward pressure on the file F with respect to its work. It is also to be pointed out that th cam arm 46 is so arranged and is of such dimensions and design to allow immediate upward swinging movement of the holder H and 23 through which the rods H are disposed, said rods directly.

the'file F carried thereby through the action of thespring l4 when the holder H reaches the limit of its working stroke. It is also believed to be apparent that the movement imparted to the holder-H and the file F carriedthereby are in close simulation to th movements when a file is being hand operated or in an oscillating manner, thereby assuring the most effective working action of the file.

The shaft 45 is disposed through aboxing 49 extending forwardly from the casing 50 of the motor E, said shaft being rotatably directed through outstanding tubular bearings 5| carriedby the opposite side walls of the boxing 43. These outstanding tubular bearings 5| are directed.

through suitably positioned openings 52 whereby the'motor structure S is effectively supportedby the side plates A and B. Each of these members- 5l, immediately adjacent to the boxing 49, rigidly carries a surrounding annular plate orfiange: 53 having close contact with the inner face of a side plate A or B, and secured thereto by the screw. members 54 or the like disposed outwardly through the side plate A or B and operatively engaging the plate or flange 53.

' From the foregoing it is believed to be readily; apparent that the tool as disclosed is one whichcan be readily portable and can be readily manipulated manually and after once being placed upon the surface to be treated can be readily shifted therealong as the progress of the work demands.

To facilitate the use of the tool the forward end portions of the side plates have operatively engaged therewith in any desired manner an upstanding knob to be readily grasped b one hand of the operator and the rear portions of the side plates Aand B and the motor E have suitably secured thereto a hand grasp or handle 56, as il'-' lustrated in fragment. It is believed to be obvi one that any other means desired may be em-' ployed tofacilitate anoperator having effective hold on the tool.

The block 36 is held in its selected adjusted positions within its slots 35, in the present embodiment of my invention, through the mediumof a spring pressed tubular member or ball 51 working within an opening 58 in the rock arm 33; to one side of the slot 35 and incommunication: with such'slot. This member or ball 51 is par-i tially' received in one of the parti-spherical depressions 59 provided in the adjacent face of the block 36. These depressions are spaced apart a desired distance in a direction lengthwise of the block 36. The spring pressed member or ball 5'! is maintained in applied or working position by an arm 60 pivotallyconnected'as at 6], with; the rock arm 33 and of a length to extend'over and close the outerend of theopening. 58.: As is clearly illustrated 'in Figure 5 of the drawings, the expansible coil spring 62 coacting with the member or ball 51 is interposed between said member or ball 51 and the portion of the arm 60 disposed over the outer endiof the opening 58;

As'illustratedin the drawings," the file F isof a solid type. It is to be stated, however, that the tool can be employed with equal facility with a file of slotted or perforated type. In order to facilitate the use of such type of file, the hold ing plate 22 of the file holder His provided with the suitably positioned and longitudinallydisposed elongated slots 63 to allow'forthe ready passage of the filings working up through-the slotted or perforated file. In order to readily dispose of such filings the lower portion of each of the side plates A and B is provided therealong with an elongated clean-out slot 64 so that upon slight lateral tilting or turning 'of'the tool in either direction the filings can be readily removed.

I also find it of advantage to provide the plate B with a suitable housing 65 to enclose the worm wheel 43 and its associated worm pinion 64.

In Figures 9 and 10 is illustrated an embodiment of my invention wherein two file holders are employed, together with means for reciprocating such holders in unison but in opposite directions. A tool having this compound action will remove substantially all the filing thrust load from the hands of, the operator. In this second embodiment of my invention an elongated plate 66 is supported between the side plates C andiD in the same manner as hereinbefore set forth with respect to the plate I0 of the first embodiment of my invention. The parallel rods 61 carried by and below the plate 65 have slidably mounted thereon the file holders X, one positioned in advance of the other, and each of these holders X has suitably secured to the under surface thereof a desired file Y, The forward holder X, at its front end, is provided with an upstanding post 68 having pivotally connected therewith a rigid link 69 which is also operatively engaged with the rock arm 10. This rock arm 1.0 is operated from the electric motor P in substantially the same manner as described in detail in the first embodiment of my invention with respect to the rock arm 33 and, therefore, it is be- 4 lieved unnecessary that a further detailed description of such operation be given. Also pivotally connected with the post 68 is a second rigid link H which in turn is pivotally connected, as at 12, with the lower end portion of an upwardly and rearwardly directed rigid link 13. The upper end portion of this link 13 is pivotally connected, as at 14, with the upper extremit of a lever 15. This lever 15, substantially midway its ends, is mounted, as at 15, upon the adjacent side plate C for rocking movement. This lever 15 is disposed generally in a vertical direction and its lower extremity has pivotally connected therewith, as at 11, the forward end portion .of a rearwardly disposed elongated rigid link 18 which is also pivotally connected, as at 19, with an upstanding post 80 carried by the forward portion of the rear holder X. The plate 66 is provided with the suitably positioned elongated and longitudinally extending slots 8| to allow for the desired passage therethrough of the posts 68 and 80.

The plate 56 has desired intermittent swinging movement with the downward movement under pressure in the same manner as hereinbefore described in detail with respect to the plate It and 75 facility with which it may be assembled and op erated.

Iclaim: g 1. A filing tool comprising spaced sideplates", an-"elongated plate positioned therebetween,

means for pivotally mounting an'end portion of said last-named plate with the side plates, a file holder carried by the last-named plate and having reciprocating movement,- a driven shaft c'a-r ried by the side plates, a cam member carried by the shaft for intermittent ceaction with "the swinging plate for forcibly swinging the same outwardly; means for swinging said plate inward ly, a rock arm supported between the side plates for swinging movement, an operative connection between the driven shaft and therock arm for swinging the rock arm, an operative connection between the rock arm and the file holder for re ciprocating the file holder upon swinging movement of the rock'arm, a motor supported between and to the side plates, and a driving-connecti'on between the motor and the driven shaft.

2. A filing tool comprising spaced side plates having lower longitudinal edges straight from end to end and coplanar in a direction transversely of the tool, a plate positioned between the side plates and of a length to extend substantially from end to end of the side plates, means for pivotally connecting the last named plate with the side plates, with said last named plate a material distance above the lower longitudinal straight edges of the side plates, flanges depending from the opposite end portions of the pivoted plate, guide rods secured to and bridging the space between the flanges, an elongated file plate holder underlying the rods, upstanding parts carried by the file plate holder and engaged with the rods for suspending the file plate holder from the rods and for reciprocating movement on the rods, yieldable means for supporting the free end portion of the pivoted plate, and power driven means for reciprocating the file holder plate.

3. A filing tool comprising spaced side plates having lower longitudinal edges straight from end to end and coplanar in a direction transversely of the tool, a plate positioned between the side plates and of a length to extend substantially from end to end of the side plates, means for pivotally connecting the last named plate with the side plates, with said last named plate a material distance above the lower longitudinal straight edges of the side plates, flanges depending from the opposite end portions of the pivoted plate, guide rods secured to and bridging the space between the flanges, an elongated file holder plate underlying the rods, upstanding parts carried by the file holder plate and engaged with the rods for suspending the file holder plate from the rods and for reciprocating movement on the rods, yieldable means for supporting the free end portion of the pivoted plate, an upstanding post carried by one of the parts engaged with the rods, a rock arm supported by and between the side plates, an operative connection between the rock arm and the post, and means for rocking the rock arm, the pivoted plate being provided with a slot through which the post freely passes, said slot being of a length to offer no obstruction to the reciprocating movement of the file holder plate upon rocking of the rock arm, and means for swinging the plate downwardly during movement of the file'holder plate in the direction of the cutting. I 4. A filing tool comprising'a supporting structure, a plate, means for pivotally connecting the plate with the supporting structure for swinging movement toward or from the work with which the tool is used, a file holder, means for suspending the file holder from-the plate for reciprocating movement, a driven element carried by the supporting structure including a cam member, a part yieldingly mounted upon the plate and with which the cam member engages from above for intermittently .forcing the plate in a direction toward the work upon operation of the driven element, and means operated by said driven element for reciprocating the file holder in a file cutting direction while the plate is being forced toward the work.

V 5. A filing tool comprising spaced side plates, an elongated plate positioned therebetween, means for pivotally mounting an end portion of said elongated plate with the side plates, a file holder carried by the last named plate and hav-. ing reciprocating movement therealong, a motor supported by and between the side plates, and

meansoperated' from the motor for intermittently forcing the elongated plate in adirection toward the work and for reciprocating the file holder.

6. A filing tool comprising spaced side plates, an elongated plate positioned between the side plates, means for pivotally supporting one end portion of the elongated plate from the side plates, afile holder carried by and below the swinging plate for reciprocating movement, and means carried by the side plates and coacting with the pivoted plate for rocking the same and for reciprocating the file holder, said file holder being spaced from the elongated plate, the side walls being provided with clean-out slots communicating between the file holder and the elongated plate.

'7. A filing tool comprising a supporting structure, an elongated swinging plate carried by said structure for swinging movement toward or from the work, an elongated file holder plate carried by and positioned below the swinging plate and spaced therefrom, said file holder plate being provided with openings for the passage of filings, means for forcing the swinging plate toward the work, and means for reciprocating the file holder plate.

ORVILLE W. THRAILKILL. 

